Background: Birth weight is an important determinant of an infant’s well-being as low or large birth weight are associated with morbidities or mortality during pregnancy and later in life. Maternal anthropometry is a potential veritable tool in evaluation of pregnancy status and prediction of birth weight. Aim: This study was designed to determine the predictive values of the gestational variations of some anthropometric parameters in booked pregnant subjects at the antenatal clinic of Alex Ekwueme Federal University Teaching Hospital, Abakaliki andin which trimester these anthropometric parameters (weight, height, BMI, BSA) correlates better with the birth weight of a neonate.